package com.jay.syncdrawing;

import java.util.Stack;
import java.util.Timer;
import java.util.TimerTask;

import com.jay.syncdrawing.utils.ToastUtils;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;
/*
 * AppManager
 * ActivityManager
 * */
public class AppManager {
	private static Stack<Activity> activityStack;
	private static AppManager instance;

	private AppManager() {
	}

	/**
	 * 单一实例
	 */
	public static AppManager getAppManager() {
		if (instance == null) {
			instance = new AppManager();
		}
		return instance;
	}

	/**
	 * 添加Activity到堆栈
	 */
	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	/**
	 * 获取当前Activity（堆栈中最后一个压入的）
	 */
	public Activity currentActivity() {
		Activity activity = activityStack.lastElement();
		return activity;
	}

	/**
	 * 结束当前Activity（堆栈中最后一个压入的）
	 */
	public void finishActivity() {
		Activity activity = activityStack.lastElement();
		if (activity != null) {
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 结束指定的Activity
	 */
	public void finishActivity(Activity activity) {
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 结束指定类名的Activity
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	/**
	 * 结束所有Activity
	 */
	public void finishAllActivity() {
		for (int i = 0, size = activityStack.size(); i < size; i++) {
			if (null != activityStack.get(i)) {
				activityStack.get(i).finish();
			}
		}
		activityStack.clear();
	}

	/**
	 * 退出应用程序
	 */
	@SuppressWarnings("deprecation")
	public void AppExit() {
		try {
			Context context = DrawingApp.getInstance();
			finishAllActivity();
			ActivityManager activityMgr = (ActivityManager) context
					.getSystemService(Context.ACTIVITY_SERVICE);
			activityMgr.restartPackage(context.getPackageName());
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(0);
		} catch (Exception e) {
		}
	}

	/*
	 * 双击退出函数如下
	 */
	private static Boolean isExit = false;

	public void exitBy2Click() {
		//定时器类
		Timer tExit = null;
		if (isExit == false) {
			//准备退出
			isExit = true;
			ToastUtils.showToast(DrawingApp.getInstance().getResources().getString(R.string.toast_exit));
			tExit = new Timer();//
			tExit.schedule(new TimerTask() {
				@Override
				public void run() {
					// 取消退出
					isExit = false;
				}
			}, 2000);//如果2秒钟内没有按下返回键,则启动定时器取消刚才执行的任务
		} else {
			AppExit();
		}
	}
}
